<?php
/**
 * Created by PhpStorm.
 * User: TheLuther
 * Date: 2019/10/28
 * Time: 20:05
 */

namespace app\common\model;

use think\model;
use think\db;
use think\facade\Cache;
use think\facade\Config;

class Group extends model
{
    protected static $instance;
    public static function instance($options = [])
    {
        if (is_null(self::$instance)) {
            self::$instance = new self($options);
        }
        return self::$instance;
    }

}